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Revenue Recognition - Disaggregation of Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Total Revenue	$ 38,700	$ 36,131	$ 106,208	$ 100,747
Prime
Disaggregation of Revenue [Line Items]
Total Revenue	36,882		103,947
Subcontractor
Disaggregation of Revenue [Line Items]
Total Revenue	1,818		2,261
Time and materials
Disaggregation of Revenue [Line Items]
Total Revenue	33,426		98,841
Cost reimbursable
Disaggregation of Revenue [Line Items]
Total Revenue	4,545		5,791
Firm fixed price
Disaggregation of Revenue [Line Items]
Total Revenue	729		1,576
Department of Veterans Affairs
Disaggregation of Revenue [Line Items]
Total Revenue	23,056		68,563
Department of Health and Human Services
Disaggregation of Revenue [Line Items]
Total Revenue	14,297		34,987
Other
Disaggregation of Revenue [Line Items]
Total Revenue	$ 1,347		$ 2,658

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+ References

No definition available.

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Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 1
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-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130539-203045

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 606
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-Name Accounting Standards Codification
-Topic 606
-SubTopic 10
-Section 50
-Paragraph 4
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-URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130543-203045

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